Patent US2887055A successfully refreshed from Google Patents.
Patent US2885550A successfully refreshed from Google Patents.
US2885550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for current supply
Assignee: —
•
Filing: —
•
Granted: 1959-05-05
•
Expires: 1976-05-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:11
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1938212A
Cited
US2144237A
Cited
US2306888A
Cited
US2374781A
Cited
US2556286A
Cited
US2611111A
Cited
US2620448A
Cited
US2750452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |